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Streamflow Measurements for the Nation

! Streamflow measurement pages will be decommissioned in early 2026. Please find the modernized pages in WDFN that suit you best. Learn more about our modernization plans and timeline and new pages.

USGS 50047990 RIO GUAYNABO NR BAYAMON, PR
Guaynabo Municipio, Puerto Rico
Hydrologic Unit Code 21010005
Latitude  18°22'32", Longitude  66°07'59" NAD27
Drainage area 73.2  square miles
Gage datum 65.6 feet above NGVD29
Output formats
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HTML table without channel data
Tab-separated data with channel data
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Meas.
Number		   Date       Time Time
Datum		 Measurement
Used?		   Who Measuring
Agency		 Stream
flow
(ft3/s)		 Gage
Height
(ft)		 GH
Change
(ft)		 Meas.
Duration
(hr)		 Meas.
Rated		   Control Flow
Adjust.
Code 		 Channel
Number		 Channel
Name		 Meas.
type 		 Stream
flow
method 		 Velocity
method 		 Channel
flow
(ft3/s)		 Channel
width
(ft)		 Channel
area
(ft2)		 Channel
vel.
(ft/s)		 Channel
stability 		 Channel
material 		 Channel
evenness 		 Long.
vel.
desc. 		 Horz.
vel.
desc. 		 Vert.
vel.
desc. 		 Channel
loc.
code 		 Channel
loc.
dist.(ft)
312025-12-10 13:32:38ASTYesBPG/BNCUSGS20.9 Poor NONE1MainBRDSQADCPVADCP20.997.62850.07FIRMCBLSEVENSTDYUNSPUNKNATGA0.00
302025-08-27 13:31:09ASTYesDSC/BPGUSGS29.6 0.20PoorClearNONE1MainMBOTQADCPVADCP29.692.83190.09SOFTSANDEVENSTDYEVENSTNDATGA0.00
292025-05-06 12:15:34ASTYesJMC/BPGUSGS49.9 Fair NONE1MainBRDSQADCPVADCP49.975.72910.17SOFTsiltUNEVSTDYEVENSTNDUNSP
282025-02-04 13:12:03ASTYesMRT/BPGUSGS22.8 Fair NONE1MainMBOTQADCPVADCP22.892.33010.08FIRMsiltEVENSTDYEVENUNKNUNSP
272024-11-07 12:14:46ASTYesDSC/BPGUSGS278 0.20FairClearNONE1MainMBOTQADCPVADCP27893.33890.72SOFTSANDEVENSTDYEVENSTNDDNST20.00
262024-08-29 12:01:43ASTYesDSC/BPGUSGS27.9 PoorClearNONE1MainMBOTQADCPVADCP27.977.62900.10SOFTsiltEVENSTDYEVENSTNDATGA0.00
252024-05-08 12:52:29ASTYesBPG/DSCUSGS127 Fair NONE1mainMBOTQADCPVADCP12785.92980.43SOFTsiltUNEVSTDYUNEVSTNDUNSP
242021-02-01 11:45ASTYesYMM/DSCUSGS56.2 Poor NONE1MainOTHRother 56.2 SOFTSANDEVENSTDYEVENSTNDATGA0.00
232020-11-02 11:46:30ASTYesDSC/YYMUSGS64.3 Poor NONE1MainOTHRother 64.3 FIRMSANDEVENSTDYEVENUNKNATGA0.00
222020-08-10 11:22:30ASTYesDSC/YMUSGS40.9 Poor NONE1MainOTHRother 40.9 SOFTSANDEVENSTDYEVENUNKNATGA0.00
212020-02-11 12:55:30ASTYesJSB/MRQUSGS107 Poor NONE1MAINOTHRother 107 SOFTSANDEVENSTDYUNSPSTNDDNST0.00
202019-11-04 14:34:30ASTYesMRT/JSB/HollUSGS1200.000.000.00Poor NONE150047990OTHRother 120 SOFTSANDEVENSTDYEVENSTNDDNST0.00
192019-08-05 11:00ASTYesYYM/LVAUSGS5.50 Poor NONE150047990OTHRother 5.50 FIRMsiltEVENSTDYEVENUNKNDNST5.00
182019-05-07 10:35ASTYesYMM/LVAUSGS10.0 Poor NONE150047990OTHRother 10.0 FIRMsiltEVENSTDYEVENUNKNDNST5.00
172019-02-13 14:48ASTYesYMM/LVAUSGS14.5 GoodClearNONE150047990WADEQSCMMVADV14.537.025.60.57FIRMCBLSEVENSTDYEVENUNFMUPST1000.00
162018-10-29 11:10ASTYesYM/LVUSGS5.50 Poor NONE150047990OTHRother 5.50 FIRMsiltEVENSTDYUNSPUNKNDNST5.00
152018-08-06 11:07:30ASTYesYM/LVUSGS18.2 Poor NONE150047990OTHRother 18.2 FIRMsiltEVENSTDYEVENSTNDDNST5.00
132018-05-29 10:25ASTYesYMM/LVAUSGS15.3 Poor NONE150047990OTHRother 15.3 FIRMsiltEVENSTDYEVENUNKNDNST5.00
142018-02-06 10:32:30ASTYesYM/LVUSGS22.4 Poor NONE150047990OTHRother 22.4 FIRMsiltEVENSTDYEVENUNKNDNST5.00
122017-10-30 10:42:30ASTYesYMM/IMRUSGS5.23 Poor NONE1MainOTHRother 5.23 SOFTsiltEVENSTDYEVENSTNDUNSP
112017-08-17 11:52:30ASTYesLVA/YMMUSGS6.50 Unspecified NONE150047990OTHRother 6.50 UNSPUNSPUNSPunknUNSPUNSPUNSP
102017-05-22 10:11:30ASTYesLVA/YMMUSGS17.9 UnspecifiedClearNONE150047990OTHRother 17.9 SOFTSANDEVENunknEVENSTNDUNSP
92017-03-20 10:52:30ASTYesLV/IR/YUSGS0.78 Poor NONE1MainOTHRother 0.78 FIRMSANDEVENunknEVENSTNDUNSP
82016-10-31 09:55:30ASTYesYM/IRUSGS1.20 Poor NONE1MainOTHRother 1.20 SOFTSANDEVENunknEVENSTNDUNSP
72016-09-06 09:36ASTYesCDMUSGS6.19 Unspecified NONE1MAINWADEQSCMMVADV6.1990.068.80.09FIRMSANDEVENunknUNSPUNKNUNSP
62016-05-17 10:04ASTYesYM, IRUSGS0.78 Poor NONE1MainOTHRother 0.78 SOFTsiltEVENunknEVENSTNDUNSP
52016-02-01 10:16ASTYesYM, IRUSGS2.16 Poor NONE1MainOTHRother 2.16 FIRMSANDUNEVunknEVENSTNDUNSP
42015-11-02 10:02:30ASTYesYM, IRUSGS42.8 Poor NONE1MainOTHRother 42.8 FIRMSANDEVENunknEVENSTNDUNSP
32015-08-17 10:18:30ASTYesYM, IRUSGS6.00 Poor NONE1MainOTHRother 6.00 SOFTSANDEVENunknEVENSTNDUNSP
22015-05-11 09:55:30ASTYesYM, IRUSGS0.33 Poor NONE1MainOTHRother 0.33 FIRMSANDEVENunknEVENSTNDUNSP
12015-01-26 12:12:30ASTYesCG, IRUSGS21.8 FairDebrisLightNONE150047990WADEQSCMMVADV21.896.02420.09SOFTSANDUNEVunknUNSPSTNDDNST30.00